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Add unit test for FindEarliestAtLeast

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Suhas Daftuar 2017-01-11 21:31:00 -05:00 committed by Gregory Maxwell
parent 997a98a674
commit 4b06e41c30
1 changed files with 43 additions and 0 deletions
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43
src/test/skiplist_tests.cpp
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@ -100,4 +100,47 @@ BOOST_AUTO_TEST_CASE(getlocator_test)
}
}
BOOST_AUTO_TEST_CASE(findearliestatleast_test)
{
std::vector<uint256> vHashMain(100000);
std::vector<CBlockIndex> vBlocksMain(100000);
for (unsigned int i=0; i<vBlocksMain.size(); i++) {
vHashMain[i] = ArithToUint256(i); // Set the hash equal to the height
vBlocksMain[i].nHeight = i;
vBlocksMain[i].pprev = i ? &vBlocksMain[i - 1] : NULL;
vBlocksMain[i].phashBlock = &vHashMain[i];
vBlocksMain[i].BuildSkip();
if (i < 10) {
vBlocksMain[i].nTime = i;
vBlocksMain[i].nTimeMax = i;
} else {
// randomly choose something in the range [MTP, MTP*2]
int64_t medianTimePast = vBlocksMain[i].GetMedianTimePast();
int r = insecure_rand() % medianTimePast;
vBlocksMain[i].nTime = r + medianTimePast;
vBlocksMain[i].nTimeMax = std::max(vBlocksMain[i].nTime, vBlocksMain[i-1].nTimeMax);
}
}
// Check that we set nTimeMax up correctly.
unsigned int curTimeMax = 0;
for (unsigned int i=0; i<vBlocksMain.size(); ++i) {
curTimeMax = std::max(curTimeMax, vBlocksMain[i].nTime);
BOOST_CHECK(curTimeMax == vBlocksMain[i].nTimeMax);
}
// Build a CChain for the main branch.
CChain chain;
chain.SetTip(&vBlocksMain.back());
// Verify that FindEarliestAtLeast is correct.
for (unsigned int i=0; i<10000; ++i) {
// Pick a random element in vBlocksMain.
int r = insecure_rand() % vBlocksMain.size();
int64_t test_time = vBlocksMain[r].nTime;
CBlockIndex *ret = chain.FindEarliestAtLeast(test_time);
BOOST_CHECK(ret->nTimeMax >= test_time);
BOOST_CHECK((ret->pprev==NULL) || ret->pprev->nTimeMax < test_time);
BOOST_CHECK(vBlocksMain[r].GetAncestor(ret->nHeight) == ret);
}
}
BOOST_AUTO_TEST_SUITE_END()